diff --git a/src/protobuf/qabstractprotobufserializer.cpp b/src/protobuf/qabstractprotobufserializer.cpp
index 8ac7df85..ca75440e 100644
--- a/src/protobuf/qabstractprotobufserializer.cpp
+++ b/src/protobuf/qabstractprotobufserializer.cpp
@@ -11,7 +11,7 @@ QT_BEGIN_NAMESPACE
 /*!
     \class QAbstractProtobufSerializer
     \inmodule QtProtobuf
-    \since 6.4
+    \since 6.5
     \brief The QAbstractProtobufSerializer class is interface that represents
            basic functions for serialization/deserialization.
     \reentrant
diff --git a/src/protobuf/qprotobufserializer.cpp b/src/protobuf/qprotobufserializer.cpp
index 4e65de5e..5a035418 100644
--- a/src/protobuf/qprotobufserializer.cpp
+++ b/src/protobuf/qprotobufserializer.cpp
@@ -67,7 +67,7 @@ QtProtobufPrivate::SerializationHandler QtProtobufPrivate::findHandler(QMetaType
 /*!
     \class QProtobufSerializer
     \inmodule QtProtobuf
-    \since 6.4
+    \since 6.5
     \brief The QProtobufSerializer class is interface that represents
            basic functions for serialization/deserialization.
     \reentrant